From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751616Ab1GSBMu (ORCPT ); Mon, 18 Jul 2011 21:12:50 -0400 Received: from infernal.debian.net ([87.230.26.131]:53427 "EHLO infernal.debian.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750983Ab1GSBMs (ORCPT ); Mon, 18 Jul 2011 21:12:48 -0400 X-Greylist: delayed 2258 seconds by postgrey-1.27 at vger.kernel.org; Mon, 18 Jul 2011 21:12:48 EDT Date: Tue, 19 Jul 2011 02:35:04 +0200 From: Andreas Bombe To: Jiri Slaby Cc: gregkh@suse.de, jirislaby@gmail.com, linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org, Alan Cox , Arnd Bergmann Subject: Re: [PATCH v2 1/6] TTY: serial, remove BTM from wait_until_sent Message-ID: <20110719003503.GA4138@amos.fritz.box> References: <1310646915-3032-1-git-send-email-jslaby@suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1310646915-3032-1-git-send-email-jslaby@suse.cz> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Jul 14, 2011 at 02:35:10PM +0200, Jiri Slaby wrote: > This should also fix the issue Andreas is seeing (BTM in comparison to > BKL doesn't have any hidden functionality like unlocking during > sleeping). I tested the patch series and it does not appear to make a difference for the internal (16550A) serial ports on my system. Also, I am still unclear on why it freezes the X display during the timeout period. The other serial port device I have at hand is a FTDI USB->Dual UART which appears to not have a timeout at all, but then that shows no difference whether your patches are applied or not. I don't remember if it was always that way, at least 2.6.39 also acts identically. -- Andreas Bombe